Gas engine



- (No Model.)

No. 540,923. v

2 Sheets-Sheet 1.

O. M. RHODES. GAS ENGINE.

Patented June 11, 1895.

ixuausw @Em MIR W (No Model.) I 2 Sheets-Sheet 2.

- O. M.-RHODES.

GAS ENGINE No. 540,923. Patented June 11, 1895;

"Ni-Ten ST -hes *n'rnnr ens-enema srnomcnrrorr iorming pm or Letters Patent no. 540,923, dated June 11, 1 see. A lication no: semen 28,1894. Serial No. 629.724. of mono PTO/(ZZZ v wnom .it may concern.-

Be it'known that I, Cnsnnns M. Rnonns, of Wayne, in the county of Delaware, State of Pennsylvania, have invented certainnew nn-d useful Improvements in Gas-Engines, of

which the following is a'specifioation, due ref .erenoe lieinghadto the accompanying drew ings, forming a part hereof.

-My invention relntesgenerally to that construction of engine best'fadepted for the use of gas,eilorthe likeiu generatingpower, and has special reference to certain novel features of construction and operation in a preferred hori-' 'zontal type of engine of the character stated,

hereinafter'set forth; to the end-that the engine shall be cheap and simple in construction; in reducing to few'the number of parts, reduce frictional wearof the parts to a minimum, be economic in operation and at the same time develop greatly increased power over other constrnctionsof likechsracterenglues; the pith of mypresen-tjinvention residing in employing two cylinders each provided with a piston connected'to one and the same crank-shaft thereby operating in unison and making in and. out strokes aimultnno' ously, and using but one driving wheel and pulley for transmitting power; Each cylinder, of oourse, -hae its independent valvular connections for the admission of the power generating element and subsequent exhausting of the sameyand independent means intermittingly opernting the said valves, together with proper means for timely causing the explosion of the gas or other power generatingelement. employed.

In the drawings 1 have shown two such. views of a gas engine embodying my inven- 1 tion as-fully illustrate, to a person skilled in 40 the 'art towhich my invention apperta'ins,the construction and operation of the same.

Figure 1 is a. plan View, mostly sectional, taken as to the central longitndinal axis of the engine; and Fig. 2, a side view'ot the engine, showing iii-section oneof the valve-chambers to a cylinder and in dotted linesthe respective ends of the valve tripping-rods in contact with the cam-wheels, together with the gearing operating the parts.

Referring now to the drawings in which the several parts are indicated by numerals, similar numerals denoting like parts wherever found, 1 is a fly or-driving-wheel (the engine is edspted for the use of twosuch wheels, one

being shown in dotted lines in Fig l) and. 2 the double-crankshaft on which the same is mounted, proper hearings being provided for said shaft. Connected to said crank-shaft 2 are two piston-stems 3 each provided with a piston-head working simultaneously, that is to-say,mal1ing in and out strokes together in their respective cylinders 5. I

Each cylinder 5 is provided with a valve water jacket 6, divided by partitions forming two valve compartments or chambers 6 6 and. having two port or valve openingsin communication with the chamber of the cylinder 5, each provided, preferably, with e poppet- -valve 8 8 mounted for end to end movementonly; and further provided on its under surface or bottom with an ad mission and exhaust port respectively} and 10,in open communication with the respective chambers 6 6 of 7 said jacket 6. The stems S 8 of the valves?) 8? extend beyond the jacket 6, and on their outer ends are preferably provided with rollers or the like 8 8", all for purposes pres entlyexplained.

A high-speed-governor 11 is suitably mount ed on e shaft 7 properly journcled '1 hearings adjacent to the crank-shaft 2 and ste'rmeiliate the two cylinders 5. The respective ends of said shaft 7 are provided with a cog-gear 12 meshing with an intermediate gear 12 and the latter in turn with a gear 13 mounted on the crank-shaft 2'(the gearing'heing preferably about two to one). The said shaft 7- also carries two double cam-wheels 16 16", and

motion is imparted to said shaft 7 and its parts through thegears 13 and 1 2.

The cam-wheels 16v are double in construction, so to speak, that is to say: two cams in one integral construction, one of said cams l6 having an even periphery, while its component cam 16 has an uneven or irregular shaped periphery or face that at one point thereof merges and becomes flush with the peripheryof its component part 16, for a purpose yet tobe explained.

' Mounted horizontally in suitable bearings adjacent to the valve'stems 8 8 and camwheels 16, 16 are two rods or shafts 19 each provided at; one end With a roller 20, kept in contact with its near cam-wheel- 16, iii" re- 

